Golconda Diamonds: Regent Diamond
Present image of the 'Regent Diamond' in Louvre Museum, Paris Regent diamond , a white pale blue diamond, weighing 410 carats uncut, mined between 1698 and 1701 in Kollur Mine or 'Gani Coulour' - was a series of gravel-clay pits on the south bank of the River Krishna in the Golconda now known Andhra Pradesh, India. After its cut of the 'white pale blue diamond' now its a 140.64-carat in cushion-shaped, internally flawless (IF) stone, with a D-color grade meaning its chemically pure and structurally perfect diamond stone, containing a slight bluish tinge caused by Nitrogen or Boron element, a unique characteristic of diamond originating from the Golconda mines. Blue-violet fluorescence The bluish tinge can caused a blue-violet fluorescence and more prominent if observed under bright daylight. The cut of the diamond is a stellar brilliant-cut with eight needle-like facets on the pavilion of the stone, pointing outwards from the culet facet. ...